JPH11325694A - Cooling storage unit - Google Patents

Cooling storage unit

Info

Publication number
JPH11325694A
JPH11325694A JP13362198A JP13362198A JPH11325694A JP H11325694 A JPH11325694 A JP H11325694A JP 13362198 A JP13362198 A JP 13362198A JP 13362198 A JP13362198 A JP 13362198A JP H11325694 A JPH11325694 A JP H11325694A
Authority
JP
Japan
Prior art keywords
storage
storage room
cool air
chamber
room
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13362198A
Other languages
Japanese (ja)
Other versions
JP3447559B2 (en
Inventor
Kazuyuki Kageyama
和幸 景山
Michiharu Ishihara
道治 石原
Ryoichi Onda
良一 恩田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoshizaki Electric Co Ltd
Original Assignee
Hoshizaki Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoshizaki Electric Co Ltd filed Critical Hoshizaki Electric Co Ltd
Priority to JP13362198A priority Critical patent/JP3447559B2/en
Publication of JPH11325694A publication Critical patent/JPH11325694A/en
Application granted granted Critical
Publication of JP3447559B2 publication Critical patent/JP3447559B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0664—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/06—Refrigerators with a vertical mullion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

PROBLEM TO BE SOLVED: To cool each storage chamber efficiently as required. SOLUTION: A preservation chamber S is sustained at a preservation temperature by introducing chill from a freezing chamber F by means of a preservation chamber fan 12 or stopping introduction of chill. A suction duct 15 is disposed on the freezing chamber F side surface of a partition wall 2 while covering a chill inlet 10 and an inlet 20 is opened to the front and rear sides of the upper end part. When quick freezing is performed at the freezing chamber F, it is cooled quickly by circulating chill. When the temperature in the preservation chamber S is lower than the preservation temperature, the fan 12 is stopped and chill does not flow in positively from the freezing chamber F but it may flow in naturally. But overcooling of the preservation chamber S is prevented because the inlet 20 of the suction duct 15 is opened to the front and rear sides and the chill can not flow in easily. The freezing chamber F is cooled at a high rate because cooling load is reduced at the time of quick freezing.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、断熱箱体内を区画
壁で区分して異なる温度に冷却するようにした冷却貯蔵
庫に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration storage in which an insulated box is divided by partition walls and cooled to different temperatures.

【０００２】[0002]

【従来の技術】この種の冷却貯蔵庫の一例である急速凍
結保存庫として、図１２に示すようなものが知られてい
る。このものは、断熱箱体ａ内が区画壁ｂによって図示
右側の凍結室Ｆと左側の保存室Ｓとに区分されている。
凍結室Ｆの上方には冷却器ｃと冷却器ファンｄとが設置
され、冷却器ｃにより生成された冷気が、冷却器ファン
ｄにより同図の実線の矢線に示すように凍結室Ｆ内に循
環供給される。一方、区画壁ｂの略中央高さ位置に形成
された開口部が仕切板ｅで上下に仕切られ、下側に冷気
流入口ｆが、上側に冷気戻し口ｇがそれぞれ形成されて
いるとともに、仕切板ｅの左端側おいて区画壁ｂに沿う
ようにしてダクトｈが配設され、下ダクト部ｉの下端に
保存室ファンｊが設けられている。この保存室ファンｊ
が駆動されると、凍結室Ｆ内の冷気の一部が、同図の破
線の矢線に示すように、冷気流入口ｆから下ダクト部ｉ
を通って保存室Ｓ内に供給され、上ダクト部ｋを通って
冷気戻し口ｇから冷却器ファンｄの吸気側に還流される
といった循環流が生ずる。そして凍結室Ｆ側では、凍結
室温度センサｍで検知された検知温度に基づいて、冷却
器ｃ並びに冷却器ファンｄの駆動とその停止とが制御さ
れ、通常運転時には第１設定温度Ｔ１（−２５℃前後）
に、また急速運転時には第２設定温度Ｔ２（−４０℃前
後）に維持される。一方、保存室Ｓ側では、保存室温度
センサｎで検知された検知温度に基づいて保存室ファン
ｊの駆動とその停止とが制御され、第３設定温度Ｔ３
（−２０℃前後）に維持されるようになっている。2. Description of the Related Art As a quick freezing storage which is an example of this type of cooling storage, the one shown in FIG. 12 is known. The inside of the heat insulating box a is divided into a freezing room F on the right side and a storage room S on the left side by a partition wall b.
A cooler c and a cooler fan d are installed above the freezing chamber F, and cool air generated by the cooler c is supplied to the inside of the freezing chamber F by the cooler fan d as indicated by a solid arrow in FIG. To be circulated. On the other hand, an opening formed at a substantially central height position of the partition wall b is vertically divided by a partition plate e, a cool air inlet f is formed on a lower side, and a cool air return port g is formed on an upper side, respectively. A duct h is disposed along the partition wall b on the left end side of the partition plate e, and a storage chamber fan j is provided at a lower end of the lower duct portion i. This storage room fan
Is driven, a part of the cool air in the freezing chamber F is moved from the cool air inlet f to the lower duct portion i as shown by a broken arrow in FIG.
Circulating through the upper duct portion k and returning from the cool air return port g to the suction side of the cooler fan d. On the side of the freezing chamber F, the driving and stopping of the cooler c and the cooler fan d are controlled based on the detected temperature detected by the freezing room temperature sensor m, and during the normal operation, the first set temperature T1 (− Around 25 ° C)
During the rapid operation, the temperature is maintained at the second set temperature T2 (around −40 ° C.). On the other hand, on the storage room S side, the driving and stopping of the storage room fan j are controlled based on the temperature detected by the storage room temperature sensor n, and the third set temperature T3
(Around -20 ° C).

【０００３】[0003]

【発明が解決しようとする課題】ところで従来のもので
は、例えば急速運転が行われた場合に保存室Ｓ側が過剰
に冷却されてしまうという問題がある。すなわち、凍結
室Ｆで急速凍結を行う場合は、冷却器ｃ並びに冷却器フ
ァンｄをフル回転して、図１３のグラフに示すように、
凍結室Ｆ内を第２設定温度Ｔ２まで急速に下げることに
なる。この場合、保存室Ｓが第３設定温度Ｔ３に下がれ
ば保存室ファンｊが停止されるため、保存室Ｓに対して
積極的に冷気が供給されることはないが、それでも凍結
室Ｆ内を流通している冷気の一部が冷気流入口ｆから下
ダクト部ｉを通って自然流入し、この冷気は保存室Ｓの
第３設定温度Ｔ３より大幅に低温であることから、同グ
ラフに示されるように、保存室Ｓの温度が第３設定温度
Ｔ３を大きく下回って過剰に低下する結果となる。この
ことは一方では、急速凍結時において、凍結室Ｆのみな
らず保存室Ｓも冷却していることになり、本来冷却すべ
き凍結室Ｆに対する冷却能力が低下し、凍結室Ｆが第２
設定温度Ｔ２に達するまでに時間（ｔｘ）が掛かるとい
う問題があった。However, the conventional apparatus has a problem that the storage room S is excessively cooled when, for example, rapid operation is performed. That is, when quick freezing is performed in the freezing chamber F, the cooler c and the cooler fan d are fully rotated, and as shown in the graph of FIG.
The inside of the freezing chamber F is rapidly lowered to the second set temperature T2. In this case, if the storage room S falls to the third set temperature T3, the storage room fan j is stopped, so that cool air is not actively supplied to the storage room S. A part of the circulating cool air naturally flows in from the cool air inlet f through the lower duct portion i, and this cool air is significantly lower than the third set temperature T3 of the storage room S. As a result, the temperature of the storage room S is significantly lower than the third set temperature T3, resulting in an excessive decrease. On the other hand, at the time of quick freezing, not only the freezing room F but also the storage room S is being cooled, the cooling capacity for the freezing room F to be cooled is reduced, and the freezing room F
There is a problem that it takes time (tx) to reach the set temperature T2.

【０００４】また上記とは別に、通常運転時において、
保存室Ｓの冷却速度が低下するという問題もある。保存
室Ｓの冷却は、上記したように保存室ファンｊを駆動す
ることで、凍結室Ｆ内の冷気を冷気流入口ｆから底部側
に引き、暖まって天井側に立ち上った空気を冷気戻し口
ｇから冷却器ｃ側に戻すことで行われるが、冷気流入口
ｆと冷気戻し口ｇとが上下に隣接して配されているため
に、図１２の矢線ｘに示すようにショートサイクルを起
こしやすい。すなわち、冷却器ｃ側に戻されるべき暖ま
った空気が再び保存室Ｓ側に流入されることで、凍結室
Ｆの冷気の流入が減少し、その結果保存室Ｓの冷却速度
が低下することとなる。また、冷却器ｃ並びに冷却器フ
ァンｄが停止されている場合には、凍結室Ｆ内での冷気
の循環がなされないため、上方に暖気が、下方に冷気が
それぞれ溜まることになる。このとき、保存室Ｓ側に吸
い込まれる空気は、冷気流入口ｆよりも上方の領域（線
ｙよりも上の領域）の空気であり、この領域には保存室
Ｓからの暖気が吹き込まれることでさらに温度上昇する
傾向にある。すなわち保存室Ｓには、次第に温度上昇す
る空気が主に吹き込まれ、それに対して凍結室Ｆの底部
の冷気は使用されないために、保存室Ｓの冷却効率が悪
く、その結果冷却速度が低下する事態を招く。仮に、凍
結室Ｆの底部側の冷気の有効利用を図ることのみを考慮
すれば、冷気流入口ｆを区画壁ｂの底部側に設ければよ
いことになるが、そうすると両室Ｆ，Ｓにおいて冷気の
循環領域が減少する等の弊害が出るため、簡単には対応
できない。本発明は上記のような事情に基づいて完成さ
れたものであって、その目的は、各貯蔵室を冷却の必要
時に効率良く冷却できるようにするところにある。[0004] Apart from the above, during normal operation,
There is also a problem that the cooling speed of the storage room S decreases. The cooling of the storage room S is performed by driving the storage room fan j as described above, whereby the cold air in the freezing room F is drawn from the cold air inlet f to the bottom side, and the air that has warmed up and rises to the ceiling side is returned to the cool air return port. g is returned to the cooler c side. However, since the cool air inlet f and the cool air return g are arranged vertically adjacent to each other, a short cycle is performed as shown by an arrow x in FIG. Easy to wake up. That is, the warmed air to be returned to the cooler c side flows into the storage room S again, so that the flow of cool air in the freezing room F decreases, and as a result, the cooling speed of the storage room S decreases. Become. In addition, when the cooler c and the cooler fan d are stopped, the cool air is not circulated in the freezing chamber F, so that the warm air accumulates upward and the cool air accumulates downward. At this time, the air sucked into the storage room S is air in a region above the cold air inlet f (region above the line y), and warm air from the storage room S is blown into this region. And the temperature tends to rise further. That is, air whose temperature gradually rises is mainly blown into the storage room S, whereas the cool air at the bottom of the freezing room F is not used. Therefore, the cooling efficiency of the storage room S is low, and as a result, the cooling rate is reduced. Invite the situation. If only the effective use of the cool air on the bottom side of the freezing chamber F is considered, the cool air inlet f may be provided on the bottom side of the partition wall b. It is not easy to cope with adverse effects such as a decrease in the cool air circulation area. The present invention has been completed based on the above circumstances, and an object of the present invention is to enable each storage room to be efficiently cooled when required.

【０００５】[0005]

【課題を解決するための手段】請求項１の発明は、断熱
箱体内には区画壁で区分することにより複数の貯蔵室が
横方向に並んで形成され、一方の貯蔵室には冷却器と冷
気循環用の冷却器ファンとを有する冷凍装置が設けられ
て、この冷凍装置の制御運転により前記一方の貯蔵室が
設定温度に維持されるとともに、前記区画壁には、前記
一方の貯蔵室内の冷気の一部を他方の貯蔵室に流入させ
る流入口と、前記他方の貯蔵室から前記一方の貯蔵室側
へ還流させる戻し口とが設けられ、かつ前記流入口から
の冷気の流入を助勢する補助ファンが備えられていて、
この補助ファンの制御運転により前記他方の貯蔵室が冷
却されるようにした冷却貯蔵庫において、前記区画壁に
おける前記一方の貯蔵室側の面には、前記流入口を覆う
ようにして吸い込みダクトが設けられ、この吸い込みダ
クトの縦壁面のうちの前記一方の貯蔵室とは正対しない
縦壁面に冷気の入り口が開口されているところに特徴を
有する。請求項２の発明は、請求項１の発明において、
前記吸い込みダクト内には、その入り口から吸引された
冷気を前記流入口に向けてほぼ直線状に流通案内する整
流板が設けられているところに特徴を有する。According to the first aspect of the present invention, a plurality of storage chambers are formed in a heat insulating box body by being partitioned by partition walls, and a plurality of storage chambers are formed in a horizontal direction. A refrigeration apparatus having a cooler fan for circulating cool air is provided, and the one storage chamber is maintained at a set temperature by the control operation of the refrigeration apparatus, and the partition wall has a space inside the one storage chamber. An inlet for allowing a part of the cool air to flow into the other storage room, and a return opening for returning the cool air from the other storage room to the one storage room are provided, and assist inflow of the cool air from the inlet. With an auxiliary fan,
In the cooling storage in which the other storage room is cooled by the control operation of the auxiliary fan, a suction duct is provided on a surface of the partition wall on the one storage room side so as to cover the inflow port. It is characterized in that the inlet of the cool air is opened on the vertical wall surface of the vertical wall surface of the suction duct that does not face the one storage room. The invention of claim 2 is the invention according to claim 1,
The suction duct is characterized in that a straightening plate is provided for guiding the cool air sucked from the inlet of the suction duct substantially linearly toward the inflow port.

【０００６】また請求項３の発明は、断熱箱体内には区
画壁で区分することにより複数の貯蔵室が横方向に並ん
で形成され、一方の貯蔵室には冷却器と冷気循環用の冷
却器ファンとを有する冷凍装置が設けられて、この冷凍
装置の制御運転により前記一方の貯蔵室が設定温度に維
持されるとともに、前記区画壁には、前記一方の貯蔵室
内の冷気の一部を他方の貯蔵室に流入させる流入口と、
前記他方の貯蔵室から前記一方の貯蔵室側へ還流させる
戻し口とが設けられ、かつ前記流入口からの冷気の流入
を助勢する補助ファンが備えられていて、この補助ファ
ンの制御運転により前記他方の貯蔵室が冷却されるよう
にした冷却貯蔵庫において、前記区画壁に沿ってダクト
が配設されることにより、前記一方の貯蔵室内の冷気を
前記区画壁における略中央高さ位置から前記他方の貯蔵
室の底部側に流入させる冷気流入通路と、前記他方の貯
蔵室の天井側から冷気を引いて前記一方の貯蔵室の底部
側へ還流させる冷気戻し通路とが形成されているところ
に特徴を有する。According to a third aspect of the present invention, a plurality of storage chambers are formed in the heat insulating box by being partitioned by partition walls, and a plurality of storage chambers are formed side by side in one lateral direction. A refrigeration unit having a cooling fan is provided, and the one storage room is maintained at a set temperature by the control operation of the refrigeration device, and a part of the cold air in the one storage room is provided on the partition wall. An inlet for flowing into the other storage chamber,
A return port for refluxing from the other storage chamber to the one storage chamber side is provided, and an auxiliary fan for assisting inflow of cool air from the inflow port is provided. In a cooling storage in which the other storage room is cooled, a duct is provided along the partition wall, so that the cool air in the one storage room is cooled from a substantially central height position in the partition wall to the other storage room. And a cool air return passage for drawing cool air from the ceiling side of the other storage room and returning the cool air to the bottom side of the one storage room. Having.

【０００７】[0007]

【発明の作用および効果】＜請求項１の発明＞補助ファ
ンが停止している場合は、一方の貯蔵室の冷気が他方の
貯蔵室側に積極的に供給されることはないが、それでも
吸い込みダクトの入り口を通って流入口から一方の貯蔵
室の冷気が自然流入しようとする。その場合、吸い込み
ダクトの入り口は一方の貯蔵室とは正対しない縦壁面に
設けられていることで、冷気が流入するには回り込む必
要があるために、冷気の自然流入は制限される。これに
より他方の貯蔵室が必要以上に冷却されることが防がれ
る。また、一方の貯蔵室を冷却する場合に、上記のよう
に他方の貯蔵室側への冷気の自然流入が制限されること
で冷却負荷が減少し、一方の貯蔵室側を効率良く高速で
冷却することができる。 ＜請求項２の発明＞補助ファンが駆動して冷気が吸い込
まれる場合に、整流板の機能により乱流を起こすことな
く流通させることができ、その結果、他方の貯蔵室側へ
の冷気の供給効率を高めることができる。<Operation and Effect of the Invention><Invention of claim 1> When the auxiliary fan is stopped, the cool air in one storage room is not actively supplied to the other storage room, but it is still sucked. The cold air in one storage room tends to flow in naturally from the inlet through the entrance of the duct. In this case, the inlet of the suction duct is provided on a vertical wall face that does not face one of the storage rooms, so that the cool air needs to wrap around to flow in, so that the natural flow of the cool air is limited. This prevents the other storage compartment from being cooled more than necessary. Further, when cooling one storage room, the natural load of the cool air into the other storage room side is restricted as described above, thereby reducing the cooling load, and efficiently cooling the one storage room side at high speed. can do. <Invention of Claim 2> When cool air is sucked by driving the auxiliary fan, it can be circulated without causing turbulence by the function of the rectifying plate. As a result, supply of cool air to the other storage room side Efficiency can be increased.

【０００８】＜請求項３の発明＞補助ファンが駆動され
ると、一方の貯蔵室の冷気の一部が、冷気流入通路によ
り区画壁のほぼ中央高さ位置から他方の貯蔵室の底部側
に向けて流入し、相対的に暖まった冷気は、冷気戻し通
路により他方の貯蔵室の天井側から一方の貯蔵室の底部
に戻される。冷気の吸い込み位置と戻し位置とが離間し
ているためショートサイクルが発生しない。また、他方
の貯蔵室からの戻し冷気が一方の貯蔵室の底部側に戻さ
れるから、一方の貯蔵室内における低温の冷気と混合さ
れた後、改めて他方の貯蔵室側へ吸い込まれることとな
り、比較的低温の冷気を他方の貯蔵室に供給することが
できる。したがって他方の貯蔵室を冷却する場合にその
速度を上げることができ、また一方の貯蔵室の冷気全体
を使用することとなって効率も良い。When the auxiliary fan is driven, a part of the cool air in one storage chamber is moved from a position substantially at the center of the partition wall to the bottom side of the other storage chamber by the cool air inflow passage. The cool air that flows toward and is relatively warmed is returned from the ceiling side of the other storage room to the bottom of one storage room by the cool air return passage. Since the cold air suction position and the return position are separated from each other, a short cycle does not occur. Also, since the return cold air from the other storage room is returned to the bottom side of one storage room, it is mixed with the low-temperature cool air in one storage room and then sucked into the other storage room again. Very cold air can be supplied to the other storage compartment. Therefore, when the other storage room is cooled, the speed can be increased, and the whole cool air of one storage room is used, so that the efficiency is good.

【０００９】[0009]

【発明の実施の形態】以下、本発明を急速凍結保存庫に
適用した実施形態を添付図面に基づいて説明する。 ＜第１実施形態＞本発明の第１実施形態を図１ないし図
５によって説明する。図１において、符号１は急速凍結
保存庫の本体を構成する断熱箱体であって、その内部が
断熱性の区画壁２によって左右２部屋に区分されてお
り、向かって右側の部屋が、食品を急速凍結させる凍結
室Ｆであり、左側の部屋が、急速凍結された食品を冷凍
保存するための保存室Ｓとなっている。凍結室Ｆ内の上
方には、仕切板３で仕切られて冷却器室４が形成され、
その中に冷却器５と冷却器ファン６とが設置されてお
り、冷却器５により生成された冷気が冷却器ファン６に
より吹き出され、同図の実線の矢線に示すように、凍結
室Ｆにおける区画壁２とは反対側の側壁に沿って流下し
つつ区画壁２側に向けて横切り、区画壁２に沿うように
立ち上って冷却器ファン６の吸引側に導かれるといった
循環流を生ずるようになっている。そして、この凍結室
Ｆ側では、凍結室温度センサ８で検知された検知温度に
基づいて、冷却器５並びに冷却器ファン６の駆動とその
停止とが制御され、通常運転時には第１設定温度Ｔ１
（−２５℃前後）に、また急速運転時には第２設定温度
Ｔ２（−４０℃前後）に維持される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a quick-frozen storage will be described below with reference to the accompanying drawings. <First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a heat insulating box constituting a main body of a quick-freezing storage, the inside of which is divided into two left and right rooms by a heat insulating partition wall 2, and the room on the right side is a food product. Is a freezing room F for rapidly freezing the food, and the room on the left side is a storage room S for freezing and storing the quickly frozen food. Above the freezing chamber F, a cooling chamber 4 is formed by being partitioned by a partition plate 3.
A cooler 5 and a cooler fan 6 are installed therein, and cool air generated by the cooler 5 is blown out by the cooler fan 6, and as shown by a solid arrow in FIG. Circulates along the side wall opposite to the partition wall 2, crosses toward the partition wall 2, rises along the partition wall 2, and is guided to the suction side of the cooler fan 6. It has become. On the side of the freezing chamber F, the driving and stopping of the cooler 5 and the cooler fan 6 are controlled based on the temperature detected by the freezing room temperature sensor 8, and the first set temperature T1 during normal operation.
(Around -25 ° C.), and at the time of rapid operation, the second set temperature T2 (around -40 ° C.).

【００１０】上記した区画壁２には、図２にも示すよう
に、その下端縁に冷気流入口１０が、上端縁よりも少し
下方位置に冷気戻し口１１がそれぞれ形成されている。
冷気流入口１０には、２個の保存室ファン１２を並べて
設けたファンユニット１３が装着されている。区画壁２
の凍結室Ｆ側の面には、吸い込みダクト１５と戻しダク
ト１６とが装着されている。吸い込みダクト１５は、図
２に示すように、方形状の本体部１８の上縁における前
後両端から分岐部１９がそれぞれ立ち上がって形成さ
れ、全体として区画壁２の奥行きよりも少し小さい奥行
き寸法と、区画壁２の約２／３の高さの高さ寸法を有し
ており、区画壁２に当てられる裏面と、下面とが開口さ
れている。この吸い込みダクト１５が、図３及び図４に
示すように、その下面を凍結室Ｆの底面に当てて、冷気
流入口１０を覆うようにして装着されている。吸い込み
ダクト１５の手前側と奥側の側面（図４では左右）と、
断熱箱体１の手前側と奥側の壁面との間には隙間が開け
られている。そして、この吸い込みダクト１５におい
て、手前側の分岐部１９における手前側の面の上端と、
奥側の分岐部１９における奥側の面の上端とにそれぞれ
入り口２０が開口されている。As shown in FIG. 2, the partition wall 2 has a cool air inlet 10 formed at a lower edge thereof and a cool air return port 11 formed at a position slightly lower than the upper edge.
At the cool air inlet 10, a fan unit 13 provided with two storage room fans 12 arranged side by side is mounted. Compartment wall 2
A suction duct 15 and a return duct 16 are mounted on the surface on the side of the freezing chamber F. As shown in FIG. 2, the suction duct 15 is formed by branching portions 19 rising from the front and rear ends of the upper edge of the rectangular main body 18, respectively, and has a depth dimension slightly smaller than the depth of the partition wall 2 as a whole, It has a height dimension of about ２ of the height of the partition wall 2, and the back surface applied to the partition wall 2 and the lower surface are open. As shown in FIGS. 3 and 4, the suction duct 15 is attached so that the lower surface thereof is in contact with the bottom surface of the freezing chamber F and covers the cold air inlet 10. The front side and the back side (left and right in FIG. 4) of the suction duct 15;
A gap is provided between the front side and the rear side wall of the heat insulating box 1. Then, in the suction duct 15, the upper end of the front side surface of the front branching portion 19,
The entrances 20 are opened at the upper end of the rear surface of the rear branch portion 19, respectively.

【００１１】一方、戻しダクト１６は、図２に示すよう
に、上記した吸い込みダクト１５の両分岐部１９の間に
挿入可能な方形状に形成され、裏面と下面とが開口され
ている。また、戻しダクト１６の表面の上端側には断熱
材３０が当てられて、断熱材カバー３１で覆われてい
る。この戻しダクト１６は、図３及び図４に示すよう
に、その上端側で冷気戻し口１１を覆い、下面を吸い込
みダクト１５の本体部１８との間に所定の隙間を設けた
状態で装着されており、この隙間が出口２１とされてい
る。なお、上記した断熱材３０は、除霜運転時において
ヒータ熱で戻しダクト１６が加熱されることを抑制し、
この戻しダクト１６と保存室Ｓ内の雰囲気とが熱交換し
て保存室Ｓ内が温度上昇することを抑制するように機能
する。On the other hand, as shown in FIG. 2, the return duct 16 is formed in a rectangular shape which can be inserted between the two branch portions 19 of the suction duct 15, and has a back surface and a bottom surface opened. Further, a heat insulating material 30 is applied to the upper end side of the surface of the return duct 16 and is covered with a heat insulating material cover 31. As shown in FIGS. 3 and 4, the return duct 16 is mounted with its upper end side covering the cool air return port 11 and a lower surface provided with a predetermined gap between itself and the main body 18 of the suction duct 15. This gap serves as an outlet 21. In addition, the heat insulating material 30 suppresses the heating of the return duct 16 by the heater heat during the defrosting operation,
The return duct 16 and the atmosphere in the storage room S function so as to suppress a temperature increase in the storage room S due to heat exchange.

【００１２】すなわち、冷気流入口１０に装着された保
存室ファン１２が駆動されると、図１の破線の矢線及び
図３の矢線に示すように、凍結室Ｆ内の冷気の一部が吸
い込みダクト１５の両入り口２０から吸い込まれて、冷
気流入口１０から保存室Ｓの底部に沿うようにして区画
壁２とは反対側の側壁に向けて吹き出され、側壁に沿う
ように立ち上ったのち、天井部を区画壁２側に横切り、
冷気戻し口１１から戻しダクト１６内を流下したのち、
下端の出口２１から冷却器ファン６の吸引側に導かれる
といった循環流を生ずるようになっている。そして、こ
の保存室Ｓ側では、保存室温度センサ９で検知された検
知温度に基づいて、保存室ファン１２の駆動とその停止
とが制御され、第３設定温度Ｔ３（−２０℃前後）に維
持されるようになっている。That is, when the storage chamber fan 12 mounted on the cool air inlet 10 is driven, a part of the cool air in the freezing chamber F is shown as indicated by the dashed arrow in FIG. 1 and the arrow in FIG. Is sucked from both inlets 20 of the suction duct 15 and is blown out from the cold air inlet 10 along the bottom of the storage room S toward the side wall opposite to the partition wall 2 and rises along the side wall. Later, cross the ceiling to the partition wall 2 side,
After flowing down inside the return duct 16 from the cool air return port 11,
A circulating flow such as being guided from the outlet 21 at the lower end to the suction side of the cooler fan 6 is generated. On the storage room S side, the drive and stop of the storage room fan 12 are controlled based on the detected temperature detected by the storage room temperature sensor 9 to reach the third set temperature T3 (about −20 ° C.). Is to be maintained.

【００１３】この第１実施形態は上記のような構造であ
って、続いてその作用を説明する。通常運転時には、図
５のグラフに示すように、凍結室Ｆ側は、冷却器５並び
に冷却器ファン６の駆動とその停止とが制御されること
で第１設定温度Ｔ１に維持され、保存室Ｓ側は、保存室
ファン１２の駆動とその停止とが制御されることで第３
設定温度Ｔ３に維持される。ここで、凍結室Ｆで急速凍
結を行うべく急速運転が開始されると、冷却器５並びに
冷却器ファン６がフル回転し、凍結室Ｆ内は第２設定温
度Ｔ２に向けて急速に温度が低下する。このとき、保存
室Ｓ側の温度が第３設定温度Ｔ３以下となっていれば、
保存室ファン１２は停止しているため、保存室Ｓに対し
て凍結室Ｆ内の冷気が積極的に供給されることはない
が、それでも区画壁２に沿うように立ち上っている冷気
の一部が、吸い込みダクト１５の入り口２０から流入し
ようとする。しかしながら両入り口２０は、区画壁２と
直角をなす手前側と奥側に開口しているため、区画壁２
に沿うように立ち上がっている冷気は、向きを変えて回
り込むようにしなければ入り口２０から流入できず、流
入量は大幅に制限される。しかも両入り口２０は、凍結
室Ｆ内の比較的高い位置にあるので、流入する冷気は相
対的に温度の高いものとなる。The first embodiment has the above structure, and its operation will be described below. During normal operation, as shown in the graph of FIG. 5, the freezing room F side is maintained at the first set temperature T1 by controlling the driving and stopping of the cooler 5 and the cooler fan 6, and the storage room F On the S side, the drive of the storage room fan 12 and the stop thereof are controlled so that the third
It is maintained at the set temperature T3. Here, when rapid operation is started to perform quick freezing in the freezing chamber F, the cooler 5 and the cooler fan 6 rotate at full speed, and the temperature in the freezing chamber F rapidly rises toward the second set temperature T2. descend. At this time, if the temperature on the storage room S side is equal to or lower than the third set temperature T3,
Since the storage room fan 12 is stopped, cold air in the freezing room F is not actively supplied to the storage room S, but still a part of the cool air rising along the partition wall 2. However, it tries to flow in from the entrance 20 of the suction duct 15. However, since both entrances 20 are open to the near side and the back side at right angles to the partition wall 2, the partition wall 2
The cold air rising along the path cannot flow in from the entrance 20 unless it turns around and turns around, and the flow rate is greatly limited. In addition, since the two inlets 20 are located at relatively high positions in the freezing chamber F, the flowing cool air has a relatively high temperature.

【００１４】その結果、図５のグラフに示すように、急
速運転に入ったにも拘わらず、保存室Ｓの温度低下は最
小限に抑えられる。また、急速運転時において、保存室
Ｓ側への冷気の流入量が抑えられるということは、冷却
負荷が小さくなるということであって、本来冷却すべき
凍結室Ｆに対して冷却能力が向上し、凍結室Ｆが第２設
定温度Ｔ２に達するまでの時間（ｔａ）が大幅に短縮さ
れる。As a result, as shown in the graph of FIG. 5, the temperature decrease of the storage room S can be minimized despite the rapid operation. In addition, during the rapid operation, the suppression of the inflow of the cool air into the storage room S means that the cooling load is reduced, and the cooling capacity of the freezing room F to be cooled is improved. The time (ta) required for the freezing chamber F to reach the second set temperature T2 is greatly reduced.

【００１５】本第１実施形態によれば、以下のような利
点を得ることができる。急速運転時において、保存室Ｓ
側に冷気が自然流入することが制限されるから、保存室
Ｓ側が必要以上に冷却されることが防止され、また冷却
負荷が減少することで、凍結室Ｆを効率良く高速で冷却
することができる。これに付随して、凍結室Ｆと保存室
Ｓとを大きな温度差を持ってそれぞれ維持することがで
きる。また、極低温の冷気が流通する可能性のある吸い
込みダクト１５が凍結室Ｆ側に配置されているので、こ
れが保存室Ｓ側に配されている場合と比較すると、ダク
ト１５に対する着霜が抑えられる。さらに、戻しダクト
１６の出口２１が冷却器室４よりも下方位置で開口され
ていることも特徴の一つである。例えば除霜運転を行う
場合は、冷却器５が加熱されることで冷却器室４内に暖
気が溜まることになるが、仮に戻しダクト１６の出口２
１が凍結室Ｆの上方側に開口していると、上記の暖気が
戻しダクト１６から保存室Ｓ側に流入して、保存してあ
る食品が半解凍されるような事態を招くおそれがある。
その点この実施形態では、戻しダクト１６の出口２１が
冷却器室４よりもさらに下方位置で開口しているので、
暖気が保存室Ｓ側に流入することが防止される。According to the first embodiment, the following advantages can be obtained. During rapid operation, the storage room S
Since the natural flow of cold air into the storage chamber S is restricted, the storage chamber S is prevented from being cooled more than necessary, and the freezing chamber F can be efficiently cooled at high speed by reducing the cooling load. it can. Accompanying this, the freezing compartment F and the storage compartment S can be maintained with a large temperature difference. Further, since the suction duct 15 through which the extremely low-temperature cold air may flow is disposed on the freezing chamber F side, frost formation on the duct 15 is suppressed as compared with the case where the suction duct 15 is disposed on the storage chamber S side. Can be Further, one of the features is that the outlet 21 of the return duct 16 is opened at a position lower than the cooler room 4. For example, when performing the defrosting operation, the cooler 5 is heated and the warm air is accumulated in the cooler room 4.
If 1 is open above the freezing compartment F, the above-mentioned warm air may flow from the return duct 16 into the storage compartment S, causing a situation in which the stored food is half-thawed. .
In this regard, in this embodiment, the outlet 21 of the return duct 16 is open at a position lower than the cooler room 4,
Warm air is prevented from flowing into the storage room S.

【００１６】＜第２実施形態＞図６および図７は本発明
の第２実施形態を示す。この第２実施形態では、冷気戻
し口１１Ａが、区画壁２Ａにおける中央高さ位置よりも
少し上方位置に開口されている。戻しダクト１６Ａは、
区画壁２Ａの保存室Ｓ側の面において、保存室Ｓの天井
部分から冷気戻し口１１Ａに達するように形成されてい
る。一方の吸い込みダクト１５Ａは、区画壁２Ａの凍結
室Ｆ側の面において、上記の冷気戻し口１１Ａの下方位
置から冷気流入口１０Ａを覆うようにして装着されてい
る。そして、吸い込みダクト１５Ａの手前側と奥側の側
面の上端部分に、それぞれ入り口２０Ａが開口されてい
る。その他の構造並びに基本的な冷却機能については前
記第１実施形態と同様であって、同一機能を有する部位
については同一符号を付すことで重複した説明は省略す
る。<Second Embodiment> FIGS. 6 and 7 show a second embodiment of the present invention. In the second embodiment, the cool air return port 11A is opened at a position slightly higher than the central height position on the partition wall 2A. The return duct 16A is
On the surface of the partition wall 2A on the storage room S side, it is formed so as to reach the cool air return port 11A from the ceiling portion of the storage room S. One suction duct 15A is mounted on the surface of the partition wall 2A on the side of the freezing compartment F so as to cover the cold air inlet 10A from a position below the cold air return port 11A. In addition, entrances 20A are respectively opened at upper end portions of the front side and the rear side of the suction duct 15A. The rest of the structure and the basic cooling function are the same as those of the first embodiment, and the portions having the same function are denoted by the same reference numerals, and redundant description is omitted.

【００１７】第２実施形態の作用は以下のようである。
通常運転から凍結室Ｆで急速凍結を行うべく急速運転に
切り換わると、冷却器５並びに冷却器ファン６がフル回
転して、凍結室Ｆ内は第２設定温度Ｔ２に向けて急速に
温度が低下する。このとき、保存室ファン１２が停止し
ているにも拘わらず、区画壁２Ａに沿うように立ち上っ
ている冷気の一部が吸い込みダクト１５Ａの入り口２０
Ａから流入しようとするが、両入り口２０Ａは、区画壁
２Ａと直角をなす手前側と奥側に開口しているため、区
画壁２Ａに沿って流通している冷気は、向きを変えて回
り込むようにしなければ入り口２０Ａから流入できず、
流入量は大幅に制限される。その結果、第１実施形態と
同様に、急速運転に入ったにも拘わらず保存室Ｓの温度
低下は最小限に抑えられ、また冷却負荷が減少すること
で凍結室Ｆを効率良く高速で冷却することができる。The operation of the second embodiment is as follows.
When the operation is switched from the normal operation to the rapid operation to perform quick freezing in the freezing chamber F, the cooler 5 and the cooler fan 6 rotate at full speed, and the temperature in the freezing chamber F rapidly increases toward the second set temperature T2. descend. At this time, even though the storage room fan 12 is stopped, a part of the cool air rising along the partition wall 2A is generated at the entrance 20 of the suction duct 15A.
However, since the two entrances 20A are open to the near side and the back side at right angles to the partition wall 2A, the cool air flowing along the partition wall 2A turns around and turns around. If you do not do so, you can not flow from the entrance 20A,
Inflow is severely restricted. As a result, similarly to the first embodiment, the temperature drop of the storage room S is minimized despite the rapid operation, and the freezing room F is efficiently cooled at high speed by reducing the cooling load. can do.

【００１８】＜第３実施形態＞図８および図９は本発明
の第３実施形態を示す。この第３実施形態では、前記第
１実施形態に適用された吸い込みダクト１５内に、整流
板２４が配設されている。この整流板２４は、図９に示
すように断面コ字形をなす細長い形状に形成されてお
り、両側板２５の間の寸法Ｄが、吸い込みダクト１５が
区画壁２に取り付けられた場合に、区画壁２の表面と吸
い込みダクト１５の内面との間に緊密に収まる寸法とな
っている。上記のような整流板２４が２本備えられてお
り、両整流板２４は吸い込みダクト１５内において図７
に示すように配置される。すなわち、両整流板２４の上
端がそれぞれ両分岐部１９の出口２６の内側に位置し、
下端側が互い接近するように斜め姿勢を採っている。両
整流板２４は、吸い込みダクト１５の内面に予め溶接や
ネジ止め等で固定される。<Third Embodiment> FIGS. 8 and 9 show a third embodiment of the present invention. In the third embodiment, a rectifying plate 24 is disposed in the suction duct 15 applied to the first embodiment. As shown in FIG. 9, the current plate 24 is formed in an elongated shape having a U-shaped cross section, and the dimension D between the both side plates 25 is determined when the suction duct 15 is attached to the partition wall 2. It is dimensioned to fit tightly between the surface of the wall 2 and the inner surface of the suction duct 15. Two straightening plates 24 as described above are provided, and both straightening plates 24 are arranged in the suction duct 15 as shown in FIG.
Are arranged as shown in FIG. That is, the upper ends of the two current plates 24 are located inside the outlets 26 of the two branch portions 19, respectively.
The oblique posture is adopted so that the lower ends approach each other. The two current plates 24 are fixed to the inner surface of the suction duct 15 in advance by welding, screwing, or the like.

【００１９】第３実施形態の作用は以下のようである。
第１実施形態で説明したように、保存室Ｓ内の温度が第
３設定温度Ｔ３よりも高くなると、保存室ファン１２が
駆動される。これにより、凍結室Ｆ内の冷気の一部が吸
い込みダクト１５の両入り口２０から吸い込まれ、吸い
込みダクト１５内を通って冷気流入口１０から保存室Ｓ
内に供給され、これにより保存室Ｓが冷却される。ここ
で整流板２４が無い場合を仮定すると、冷気が吸い込み
ダクト１５内を流通する際に、分岐部１９を出たところ
で急激に流路が広がっていることで、渦を巻くような乱
流が生じ、冷気流入口１０から保存室Ｓ内にスムーズに
供給されないことも懸念される。The operation of the third embodiment is as follows.
As described in the first embodiment, when the temperature in the storage room S becomes higher than the third set temperature T3, the storage room fan 12 is driven. As a result, a part of the cold air in the freezing chamber F is sucked from both the inlets 20 of the suction duct 15, passes through the suction duct 15, and passes through the cold air inlet 10 to the storage room S.
And thereby the storage room S is cooled. Here, assuming that there is no rectifying plate 24, when the cool air flows through the suction duct 15, the turbulent flow like a vortex is generated because the flow passage is rapidly expanded at the point where the cool air exits the branch portion 19. It is feared that the cooling air is not smoothly supplied from the cold air inlet 10 into the storage room S.

【００２０】その点この実施形態では、整流板２４が配
されていることにより、吸い込みダクト１５の入り口２
０から吸引された冷気は、分岐部１９の出口２６から整
流板２４で案内されつつほぼ真直に冷気流入口１０に向
けて流通し、冷気流入口１０から保存室Ｓに向けてスム
ーズに冷気が流入する。その結果、保存室Ｓ側を効率良
く冷却することができる。また、整流板２４が吸い込み
ダクト１５に固定されていることで整流板２４が補強材
として機能し、例えばメンテナンス等において吸い込み
ダクト１５を庫外に外したような場合に、へこみ変形さ
せたりすることが防止される。また、使用時において冷
気が流通して風圧が作用した場合にも、吸い込みダクト
１５が小刻みに振動したり、それに付随してビビリ音が
発生することが防止される。In this respect, in the present embodiment, the rectifying plate 24 is provided so that the entrance 2 of the suction duct 15
The cool air sucked from 0 flows from the outlet 26 of the branch portion 19 to the cool air inlet 10 almost straight while being guided by the straightening plate 24, and the cool air smoothly flows from the cool air inlet 10 to the storage room S. Inflow. As a result, the storage room S side can be efficiently cooled. Further, since the current plate 24 is fixed to the suction duct 15, the current plate 24 functions as a reinforcing material, and for example, when the suction duct 15 is removed from the refrigerator for maintenance or the like, the current plate 24 may be dented. Is prevented. In addition, even when cold air flows and wind pressure acts during use, the suction duct 15 is prevented from vibrating little by little, and accompanying chattering noise is prevented from being generated.

【００２１】＜第４実施形態＞本発明の第４実施形態を
図１０および図１１によって説明する。この第４実施形
態では、主に保存室Ｓの冷却効率を上げるために、区画
壁の開口並びにダクトの配設構造に改良が加えられてい
る。区画壁２Ｂには、図１１にも示すように、その中央
高さ位置よりも少し上方における手前側と奥側の端部寄
りの位置に、それぞれ冷気流入口１０Ｂが開口されてい
る。区画壁２Ｂの保存室Ｓ側の面には、上端部で両冷気
流入口１０Ｂを覆いつつ保存室Ｓの底部に達する吸い込
みダクト１５Ｂが装着されており、この吸い込みダクト
１５Ｂの下端に形成された出口２８に、保存室ファン１
２が装備されている。<Fourth Embodiment> A fourth embodiment of the present invention will be described with reference to FIGS. In the fourth embodiment, in order to mainly increase the cooling efficiency of the storage room S, the openings in the partition walls and the arrangement of the ducts are improved. As shown also in FIG. 11, the partition wall 2B is provided with a cool air inlet 10B at a position slightly above the center height position near the front and rear ends. A suction duct 15B that reaches the bottom of the storage chamber S while covering both the cold air inlets 10B at the upper end is mounted on the surface of the partition wall 2B on the storage chamber S side, and is formed at the lower end of the suction duct 15B. At the exit 28, the storage room fan 1
Two are equipped.

【００２２】一方、区画壁２Ｂの上端縁よりも少し下方
位置に冷気戻し口１１Ｂが形成されている。区画壁２の
凍結室Ｆ側の面には、戻しダクト１６Ｂが装着されてい
る。この戻しダクト１６Ｂは、裏面と下面とが開放され
た方形状に形成され、下面の開口が出口２１Ｂとなって
いる。戻しダクト１６Ｂは、その上端が冷気戻し口１１
Ｂを覆い、下端側が両冷気流入口１０Ｂの間を通って、
凍結室Ｆの底部側に延出した状態で装着されている。す
なわち、戻しダクト１６Ｂの出口２１Ｂは、凍結室Ｆの
底面と仕切板３とのほぼ中間位置にまで達している。On the other hand, a cool air return port 11B is formed slightly below the upper edge of the partition wall 2B. A return duct 16B is mounted on the surface of the partition wall 2 on the freezing room F side. The return duct 16B is formed in a square shape with the back surface and the bottom surface opened, and the opening on the bottom surface is an outlet 21B. The return duct 16B has a cool air return port 11 at its upper end.
B, the lower end side passes between both cold air inlets 10B,
It is mounted so as to extend to the bottom side of the freezing chamber F. That is, the outlet 21 </ b> B of the return duct 16 </ b> B reaches a substantially intermediate position between the bottom surface of the freezing chamber F and the partition plate 3.

【００２３】そして基本的な冷却機能としては、上記各
実施形態と同様に、凍結室Ｆ側では、凍結室温度センサ
８で検知された検知温度に基づいて、冷却器５並びに冷
却器ファン６の駆動とその停止とが制御され、すなわち
冷却器５で生成された冷気の循環供給とその停止とが繰
り返され、通常運転時には第１設定温度Ｔ１（−２５℃
前後）に、また急速運転時には第２設定温度Ｔ２（−４
０℃前後）に維持される。一方、保存室Ｓ側では、保存
室温度センサ９で検知された検知温度に基づいて、保存
室ファン１２の駆動とその停止とが制御され、すなわち
凍結室Ｆの冷気の一部を保存室Ｓ側に引き込んで循環供
給させることとその停止とが繰り返され、第３設定温度
Ｔ３（−２０℃前後）に維持されるようになっている。As a basic cooling function, as in the above embodiments, on the freezing room F side, based on the temperature detected by the freezing room temperature sensor 8, the cooler 5 and the cooler fan 6 are provided. The driving and the stop thereof are controlled, that is, the circulating supply of the cool air generated in the cooler 5 and the stop thereof are repeated, and the first set temperature T1 (−25 ° C.) during the normal operation.
Before and after) and at the time of rapid operation, the second set temperature T2 (−4).
(Around 0 ° C.). On the other hand, in the storage room S, the driving and stopping of the storage room fan 12 are controlled based on the temperature detected by the storage room temperature sensor 9, that is, a part of the cold air in the freezing room F is stored in the storage room S. The repetition of the supply to the side and the circulating supply and the stop thereof are repeated, and the third set temperature T3 (about −20 ° C.) is maintained.

【００２４】ここで例えば通常運転時において、凍結室
Ｆが第１設定温度Ｔ１（−２５℃前後）よりも低く、保
存室Ｓが第３設定温度Ｔ３（−２０℃前後）よりも高い
状態にあると、冷却器５並びに冷却器ファン６が停止さ
れる一方で、保存室ファン１２のみが駆動される状態と
なる。冷却器５並びに冷却器ファン６が停止するという
ことは、凍結室Ｆ内では冷気の循環がなされないことと
なり、上方に暖気が、下方に冷気がそれぞれ溜まる。こ
こで仮に、保存室Ｓからの戻し冷気が凍結室Ｆの上部側
にそのまま戻されると、凍結室Ｆの上方はさらに温度上
昇し、その相対的に高い温度のものが冷気流入口１０Ｂ
から保存室Ｓに供給されることになるので、保存室Ｓの
冷却効率が悪い。Here, for example, during normal operation, the freezing compartment F is lower than the first set temperature T1 (about -25 ° C.) and the storage chamber S is higher than the third set temperature T3 (about -20 ° C.). If there is, while the cooler 5 and the cooler fan 6 are stopped, only the storage room fan 12 is driven. Stopping of the cooler 5 and the cooler fan 6 means that no cool air is circulated in the freezing chamber F, and warm air is stored above and cool air is stored below. Here, if the returned cold air from the storage room S is returned to the upper side of the freezing room F as it is, the temperature above the freezing room F further rises, and the one with a relatively high temperature is the cold air inlet 10B.
From the storage chamber S, the cooling efficiency of the storage chamber S is low.

【００２５】その点この実施形態では、保存室Ｓから戻
される冷気は、冷気戻し口１１Ｂから戻しダクト１６内
を流下したのち、その下端の出口２１Ｂから凍結室Ｆの
底部側に吹き出されるので、図９の矢線に示すように凍
結室Ｆの底部側の低温の冷気と混合して凍結室Ｆ内の温
度が比較的低い温度に均一化される。そして比較的低温
となった冷気を、冷気流入口１０Ｂから保存室Ｓ側に流
入させることができるので、保存室Ｓの冷却速度が高め
られる。また、戻しダクト１６Ｂの出口２１Ｂと、冷気
流入口１０Ｂの位置が離間しているため、戻しダクト１
６Ｂから戻された比較的高温の戻し冷気がそのまま冷気
流入口１０Ｂに回り込んでしまうといったショートサイ
クルが発生することが避けられる。すなわち、この第４
実施形態によれば、保存室Ｓ側からの戻し冷気を凍結室
Ｆの底部に戻して低温の冷気と混合し、凍結室Ｆ内全体
を比較的低温にした状態で凍結室Ｆ側の冷気を保存室Ｓ
側に供給できるようにしたから、保存室Ｓ側を効率よく
高速度で冷却することができる。In this respect, in this embodiment, the cool air returned from the storage chamber S flows down through the return duct 16 from the cool air return port 11B, and is then blown out from the outlet 21B at the lower end to the bottom side of the freezing chamber F. 9, the temperature in the freezing chamber F is uniformized to a relatively low temperature by mixing with the low-temperature cold air on the bottom side of the freezing chamber F. The relatively low-temperature cold air can flow from the cold air inlet 10B into the storage room S, so that the cooling speed of the storage room S can be increased. Further, since the position of the outlet 21B of the return duct 16B and the position of the cool air inlet 10B are separated, the return duct 1
The occurrence of a short cycle in which the relatively high temperature returned cold air returned from 6B directly flows into the cold air inlet 10B is avoided. That is, this fourth
According to the embodiment, the returned cold air from the storage room S side is returned to the bottom of the freezing room F and mixed with low-temperature cold air, and the cold air on the freezing room F side is cooled in a state where the entire inside of the freezing room F is relatively low. Storage room S
The storage chamber S side can be efficiently cooled at a high speed because it can be supplied to the storage chamber S side.

【００２６】＜他の実施形態＞本発明は上記記述及び図
面によって説明した実施形態に限定されるものではな
く、例えば次のような実施形態も本発明の技術的範囲に
含まれ、さらに、下記以外にも要旨を逸脱しない範囲内
で種々変更して実施することができる。 （１）本発明は前記実施形態に例示した急速凍結保存庫
に限らず、断熱箱体内を区画壁で区分して異なる温度に
冷却するようにした冷却貯蔵庫全般に広く適用すること
ができる。<Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) The present invention can be widely applied not only to the quick-freezing storage illustrated in the above embodiment, but also to a general cooling storage in which the inside of the heat-insulating box is divided by partition walls and cooled to different temperatures.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 第１実施形態に係る急速凍結保存庫の正面か
ら見た断面図FIG. 1 is a sectional view of a quick-frozen storage according to a first embodiment as viewed from the front.

【図２】 区画壁部分の分解斜視図FIG. 2 is an exploded perspective view of a partition wall portion.

【図３】 区画壁部分の斜視図FIG. 3 is a perspective view of a partition wall portion.

【図４】 側面から見た断面図FIG. 4 is a cross-sectional view as viewed from the side.

【図５】 庫内温度を示すグラフFIG. 5 is a graph showing the temperature inside the refrigerator.

【図６】 第２実施形態に係る急速凍結保存庫の正面か
ら見た断面図FIG. 6 is a cross-sectional view of the quick-frozen storage according to the second embodiment as viewed from the front.

【図７】 区画壁部分の斜視図FIG. 7 is a perspective view of a partition wall portion.

【図８】 第３実施形態に係る区画壁部分の側面から見
た断面図FIG. 8 is a cross-sectional view of a partition wall according to a third embodiment as viewed from the side.

【図９】 整流板の斜視図FIG. 9 is a perspective view of a current plate.

【図１０】 第４実施形態に係る急速凍結保存庫の正面
から見た断面図FIG. 10 is a sectional view of the quick-frozen storage according to the fourth embodiment as viewed from the front.

【図１１】 区画壁部分の斜視図FIG. 11 is a perspective view of a partition wall portion.

【図１２】 従来の急速凍結保存庫の断面図FIG. 12 is a sectional view of a conventional quick-freezing storage.

【図１３】 その庫内温度を示すグラフFIG. 13 is a graph showing the temperature in the refrigerator.

【符号の説明】[Explanation of symbols]

Ｆ…凍結室 Ｓ…保存室 １…断熱箱体 ２…区画壁
５…冷却器 ６…冷却器ファン １０…冷気流入口 １
１…冷気戻し口 １２…保存室ファン １５…吸い込み
ダクト １９…分岐部 ２０…（吸い込みダクト１５
の）入り口 ２Ａ…区画壁 １０Ａ…冷気流入口 １１
Ａ…冷気戻し口 １５Ａ…吸い込みダクト２０Ａ…（吸
い込みダクト１５Ａの）入り口 ２４…整流板 ２Ｂ…
区画壁 １０Ｂ…冷気流入口 １１Ｂ…冷気戻し口 １５Ｂ…吸
い込みダクト １６Ｂ…戻しダクト ２１Ｂ…（戻しダ
クト１６Ｂの）出口F… Freezing room S… Storage room 1… Insulated box 2… Partition wall
5: Cooler 6: Cooler fan 10: Cool air inlet 1
DESCRIPTION OF SYMBOLS 1 ... Cold air return port 12 ... Storage room fan 15 ... Suction duct 19 ... Branch part 20 ... (Suction duct 15
No.) Entrance 2A: Partition wall 10A: Cold air inlet 11
A: Cold air return port 15A: Suction duct 20A: Entrance (of suction duct 15A) 24: Rectifying plate 2B:
Partition wall 10B Cold air inlet 11B Cold air return 15B Suction duct 16B Return duct 21B Exit (of return duct 16B)

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 断熱箱体内には区画壁で区分することに
より複数の貯蔵室が横方向に並んで形成され、一方の貯
蔵室には冷却器と冷気循環用の冷却器ファンとを有する
冷凍装置が設けられて、この冷凍装置の制御運転により
前記一方の貯蔵室が設定温度に維持されるとともに、前
記区画壁には、前記一方の貯蔵室内の冷気の一部を他方
の貯蔵室に流入させる流入口と、前記他方の貯蔵室から
前記一方の貯蔵室側へ還流させる戻し口とが設けられ、
かつ前記流入口からの冷気の流入を助勢する補助ファン
が備えられていて、この補助ファンの制御運転により前
記他方の貯蔵室が冷却されるようにした冷却貯蔵庫にお
いて、 前記区画壁における前記一方の貯蔵室側の面には、前記
流入口を覆うようにして吸い込みダクトが設けられ、こ
の吸い込みダクトの縦壁面のうちの前記一方の貯蔵室と
は正対しない縦壁面に冷気の入り口が開口されているこ
とを特徴とする冷却貯蔵庫。1. A refrigeration system having a plurality of storage compartments formed side by side in a lateral direction in a heat insulating box by dividing the compartments by partition walls, and one of the storage compartments having a cooler and a cooler fan for circulating cool air. A device is provided, and the one storage room is maintained at a set temperature by the control operation of the refrigeration device, and a part of cool air in the one storage room flows into the other storage room on the partition wall. An inflow port, and a return port for refluxing from the other storage chamber to the one storage chamber side are provided,
An auxiliary fan for assisting the inflow of cool air from the inlet is provided, and the cooling operation of the other storage chamber is controlled by the control operation of the auxiliary fan, wherein the one of A suction duct is provided on the surface on the storage room side so as to cover the inflow port, and an inlet for cold air is opened on a vertical wall surface of the vertical wall surface of the suction duct that does not face the one storage room. A cooling storage. 【請求項２】 前記吸い込みダクト内には、その入り口
から吸引された冷気を前記流入口に向けてほぼ直線状に
流通案内する整流板が設けられていることを特徴とする
請求項１記載の冷却貯蔵庫。2. The rectifying plate according to claim 1, wherein a flow straightening plate is provided in the suction duct to guide the cool air sucked from an entrance thereof substantially linearly toward the inflow port. Cold storage. 【請求項３】 断熱箱体内には区画壁で区分することに
より複数の貯蔵室が横方向に並んで形成され、一方の貯
蔵室には冷却器と冷気循環用の冷却器ファンとを有する
冷凍装置が設けられて、この冷凍装置の制御運転により
前記一方の貯蔵室が設定温度に維持されるとともに、前
記区画壁には、前記一方の貯蔵室内の冷気の一部を他方
の貯蔵室に流入させる流入口と、前記他方の貯蔵室から
前記一方の貯蔵室側へ還流させる戻し口とが設けられ、
かつ前記流入口からの冷気の流入を助勢する補助ファン
が備えられていて、この補助ファンの制御運転により前
記他方の貯蔵室が冷却されるようにした冷却貯蔵庫にお
いて、 前記区画壁に沿ってダクトが配設されることにより、前
記一方の貯蔵室内の冷気を前記区画壁における略中央高
さ位置から前記他方の貯蔵室の底部側に流入させる冷気
流入通路と、前記他方の貯蔵室の天井側から冷気を引い
て前記一方の貯蔵室の底部側へ還流させる冷気戻し通路
とが形成されていることを特徴とする冷却貯蔵庫。3. A refrigeration system having a plurality of storage chambers formed side by side in the heat-insulating box by partitioning them by partition walls. One of the storage chambers has a cooler and a cooler fan for circulating cool air. A device is provided, and the one storage room is maintained at a set temperature by the control operation of the refrigeration device, and a part of cool air in the one storage room flows into the other storage room on the partition wall. An inflow port, and a return port for refluxing from the other storage chamber to the one storage chamber side are provided,
And an auxiliary fan for assisting inflow of cool air from the inflow port, wherein the cooling storage is configured to cool the other storage room by controlling the operation of the auxiliary fan; Is disposed, a cool air inflow passage that allows cool air in the one storage room to flow from a substantially central height position in the partition wall to a bottom side of the other storage room, and a ceiling side of the other storage room. A cooling air return passage for drawing cold air from the storage room and returning the cooled air to the bottom side of the one storage chamber.
JP13362198A 1998-05-15 1998-05-15 Cooling storage Expired - Fee Related JP3447559B2 (en)

Priority Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007099186A (en) * 2005-10-07 2007-04-19 Toyota Auto Body Co Ltd Vehicular luggage compartment structure
KR100756881B1 (en) * 2006-04-14 2007-09-07 주식회사 대우일렉트로닉스 Apparatus and method for interception of defrosting heat in refrigerator
CN102538342A (en) * 2011-01-04 2012-07-04 泰州乐金电子冷机有限公司 Return air device for refrigerator
JP2019178822A (en) * 2018-03-30 2019-10-17 株式会社デンソー Multiple temperature zone refrigeration system
EP4090897A4 (en) * 2020-06-17 2023-06-21 Samsung Electronics Co., Ltd. Refrigerator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007099186A (en) * 2005-10-07 2007-04-19 Toyota Auto Body Co Ltd Vehicular luggage compartment structure
JP4655859B2 (en) * 2005-10-07 2011-03-23 トヨタ車体株式会社 Car luggage compartment structure
KR100756881B1 (en) * 2006-04-14 2007-09-07 주식회사 대우일렉트로닉스 Apparatus and method for interception of defrosting heat in refrigerator
CN102538342A (en) * 2011-01-04 2012-07-04 泰州乐金电子冷机有限公司 Return air device for refrigerator
JP2019178822A (en) * 2018-03-30 2019-10-17 株式会社デンソー Multiple temperature zone refrigeration system
EP4090897A4 (en) * 2020-06-17 2023-06-21 Samsung Electronics Co., Ltd. Refrigerator
US11946685B2 (en) 2020-06-17 2024-04-02 Samsung Electronics Co., Ltd. Refrigerator

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